Logging into Hidden Administrator Account with ctrl-alt-delete

How do i log into the hidden Administrator account of a remote XP computer. The log in icons only show a user with limited rights. I need to log in as Administrator. If sitting at machine a quick Ctrl/Alt/Delete (twice) brings up the fill in name/password box. But I can not hit the Ctrl/Alt/Delets key on LMI toolbar quick enough. I know there is another way???